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प्रश्न
Complete and balance the following reaction.
Na + H2O →_____________ +___________
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उत्तर
2Na + 2H2O → 2NaOH + H2
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संबंधित प्रश्न
MATCH THE COLUMNS
| column A | column B |
| 1. `""2H_2 + O_2 → 2H_2O` | A. This reaction is not possible |
| 2. `""H_2+CI_2 →2HCI` | B.This reaction is exothermic to the extent of explosion |
| 3.`""ZaO+ H^2→Zn +H_2O` | C.This reaction is known as Haber process |
| 4.`""Cu + H_2SO^4 → CuSO_4 + H_2 ` | D.This reaction illustrates the reducing property of bydrogen |
| 5.`""N_2 +3H_2 → 2NH_3 +heat ` | E. This reaction takes place in diffused sunlight |
| F. This reaction is a method of preparation of hydrogen |
Choose the correct option:
Elements which show unique nature in the preparation of hydrogen are:
Hydrogen may be prepared in the laboratory by the action of a metal on an acid.
Which of the metals copper, zinc, magnesium or sodium would be the most suitable?
Complete and balance the following reaction.
Ca + H2O →_____________ +___________
‘Hydrogen is obtained by electrolysis of acidified water’.
Answer the following pertaining to the preparation of hydrogen by electrolysis,
The meaning of the term ‘electrolysis’ and ‘electrolyte’.
Select the correct options for the following statement:
The metal which reacts with steam liberating hydrogen & the reaction is reversible.
Complete and balance the equation:
[General method]
Reactions of metals with dilute acids
Magnesium - Mg + 2HCl → ______+ _______ [g]
Complete and balance the equation:
[General method]
Reactions of metals - alkali [conc. soln.]
Zinc - Zn + 2NaOH → ______ + _______ [g]
Zn + 2KOH → ____ + _____ [g]
State the reactant added to hydrogen to obtain the respective product in following case.
Water
State the reactant added to hydrogen to obtain the respective product in following case.
Hydrogen sulphide
